stephens



D. H. STEPHENS.

Machine for Making Rule Joints.

Patented Nov 20, 1866 I "I l I [rave/25w" 12% N. PETERS. PhMo-Uthngnpbqn WWW. DC.

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IMPROVED MACHINE FOR MAKING RULE JOINTS.

SPECIFICATION;

TO ALL WHOM IT MAY CONCERN:

Be it known that I, D. H. STEPHENS, of Riverton, in the county of Litchfield, and State of Connecticut, have invented a new and improved Shaping Machine; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings making a part of this specification, in which- Figure 1 is a side view.

Figure 2, a top view.

Figure 3, a section through A B, showing the position of the joint to be operated on by the cutters.

Figure 4, the cutter-head, showing the position of the cutters and joint to be cut; and

Figure 5, an inverted view of the cutter-head.

The operation of the machine is as follows:

The rulejoint J, fig. 3, is placed on the point of the arbors a, between thecutters b, and by means of a treadle (not shown) which operates the lever :1, (connecting at the nut 2',) the right-hand arbor presses firmly against the joint; then, by grasping the handle is, the cutter-head moves on the arbors until one of the cutters, 6, comes in contact with the joint J; then, by turning or swinging the cutter-head, one of the knives or cutters removes the'surplus metal from the edge of J; and by turning the other way and at the same time crowding the other cutter against the joint, the work iscompleted, producing a true surface, with a good finish, in an expeditious manner.

By lifting the foot the treadle releases the lever d, and the brass springs, I, draw back the arbor a into position for another joint. By raising the latch e, and the dowel-pin g, the left-hand arbor can be removed from the machine.

The right-hand arbor can also be taken out by removing the pin in lever d, and slipping back the arbor on the feather which keeps it from turning in its bearings. The cutter-head can then be taken from the machine. The small screws in feed the cutters b, when required, and the screws n bind the cutters firmly in place. One side of the bearings of the cutter-head are split, and may be provided with flanges, with a setscrew, to compensate for wear, or the bearings may be provided with rings, with flanges and a screw, as in my machine. The stirrup f supports the wing of the joint, and relieves the joints in the arbors from strain, and has a vertical adjustment ,by a hollow screw.

Claim.

What I claim as my invention, and desire to secure by Letters Patent, is

The cutter-head's, working on the arbors a, and arranged with the adjustable butters or knives 6, feedscrew h, and binding-screw n, in connection with the movable arbors a, and lever d, or its equivalent, whether operated by hand or other power.

D. H. STEPHENS.

Witnesses:

GHAs. B. STEPHENS, JAMES B. SMITH. 

